Google Analytics is transitioning to "gtag", and right now there isn't a tag specifically for this new implementation and naming convention. Since there are already numerous posts asking for help with the new system, some kind of edit / synonym to the google-analytics tag seems to make sense). See answers to Combining Google Analytics (gtag.js) and Google Tag Manager (gtm.js)

Is gtag too generic of a tag? Possibly. A synonym added to google-analytics might make the most sense.

Supposedly I have enough reputation to create tags, but I couldn't find the right place to do so.

Helpful, thanks. (Still new to the procedures of intermediate stackoverflow-fu)
– mix3dDec 22 '17 at 14:36

@MikeMcCaughan what about adding a synonym, since gtag is mostly a renaming of the existing google-analytics tag, and used primarily for google analytics?
– mix3dDec 22 '17 at 14:38

1

Sure. I changed the tags on this question to more closely match what you're asking about. I don't have enough domain knowledge to say what should happen with this specific tag/subject, so I'll leave it to people more knowledgeable than I. BTW, adding tags is as simple as editing a question and typing the tag into the tag area. If it doesn't exist, it will be created. You are encouraged to edit the tag info to explain how people should be using the tag.
– Heretic MonkeyDec 22 '17 at 14:44